1.1.   Sebaceous cyst

 

Sebaceous cysts are common, noncancerous cysts of the skin. Cysts are atypical growths in your body that may contain liquid or semiliquid material. Sebaceous cysts are mostly found on your face, neck, or torso. They grow slowly and aren’t life threatening, but they may become uncomfortable if they go unchecked. Doctors usually diagnose a cyst with only a physical examination and your medical history. In some cases, a cyst will be examined more thoroughly for signs of cancer. Sebaceous cysts form out of your sebaceous gland. The sebaceous gland produces the oil (called sebum) that coats your hair and skin. Cysts can develop if the gland or its duct (the passage from which the oil is able to leave) becomes damaged or blocked. This usually occurs due to trauma to the area. The trauma may be a scratch, a surgical wound, or a skin condition, such as acne. Sebaceous cysts grow slowly, so the trauma may have occurred weeks or months before you notice the cyst. Your doctor can treat a cyst by draining it or by surgically removing it. Usually, cysts are removed. This doesn’t mean they’re dangerous — it may be for cosmetic reasons.

1.1.   Lipoma

 

A lipoma is a soft fatty lump. It is a non-cancerous (benign) growth made up from fat cells that clump together. A lipoma can occur in any part of the body where there are fat cells. Lipomas often form in the fatty tissue under the skin. These are also the most noticeable ones, as they look and feel like soft, dome-shaped lumps under the skin. They vary in size from pea-sized to several centimetres in diameter. The most common sites where lipomas develop are on the shoulders, the chest and the back. However, other areas of the skin can develop a lipoma. For a lipoma that forms under the skin, usually it can be removed by a simple minor operation. Some local anaesthetic is injected into the skin over the lipoma. Once the overlying skin is numbed by the local anaesthetic, a cut (an incision) is made over the lipoma. The lipoma is then removed and cut away from the underlying tissue. The wound is then stitched up. A fine scar will be left.

1.1.   Wart

Warts are typically small, rough, hard growths that are similar in color to the rest of the skin. They typically do not result in other symptoms, except when on the bottom of the feet, where they may be painful. While they usually occur on the hands and feet, they can also affect other locations. One or many warts may appear. They are not cancerous. Warts are caused by infection with a type of human papillomavirus (HPV). Factors that increase the risk include use of public showers and pools, working with meat, eczema and a weak immune system. The virus is believed to enter the body through skin that has been damaged slightly. A number of types exist, including “common warts”, plantar warts, “filiform warts”, and genital warts. Genital warts are often sexually transmitted.